Jinxer is a fictional character from the universe of the franchise Bikini Rangers.

He is a demon that worked for Master Knix. His name is based on the term "jinx," and he also was highly insightful and skilled in the ways of magic. He could conjure monsters from the cards the other demons used as well as using his own set of monster cards and was also skilled in hypnotism. He was highly loyal to Olympius and even helped him escape the Shadow World and fed him power from the Aquabase. Jinxer also helped nurture Olympius back to health when the rest of the villains dismissed Olympius for the dead. He was a cowardly sort of villain, but did engage in battle with the Rangers at least a few times. His method of attacking was using a cane-like blaster. During the Rangers' battle against the Super Demon forms of Diabolico and Olympius, Jinxer planted his only card left - a Batling card - on the leg of the Lifeforce Megazord which he then used to give rise to a massive army of Batlings to invade the Aquabase after the Lifeforce Megazord was brought back. Jinxer himself and a small faction of Batlings piloted the newly repaired Omega Megazord to place the circle of stones around Mariner Bay to assist Queen Bansheera's ceremony in opening the gateway into the Shadow World and releasing all of the demons from within into the world. After placing the final stone, Carter and Ryan destroyed the Omega Megazord by ramming the Mobile Armor Vehicle into it; Jinxer was destroyed in the process.